/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String string="jsdfhjaghjgsdljkfhasjkd";
		Set<Character> chars = new HashSet();
           for(int i = 0; i<string.length(); i++){
            chars.add(string.charAt(i));
        }
        System.out.println(chars);
	}
}

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